Precise Predictions for Event Shapes in Hadronic Higgs Decays
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915453911171072 |
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| author | Fox, Elliot Ridder, Aude Gehrmann-De Gehrmann, Thomas Glover, Nigel Marcoli, Matteo Preuss, Christian T. |
| author_facet | Fox, Elliot Ridder, Aude Gehrmann-De Gehrmann, Thomas Glover, Nigel Marcoli, Matteo Preuss, Christian T. |
| contents | We present NNLO QCD predictions for a wide range of event-shape observables in hadronic Higgs decays, taking into account the two dominant decay modes $H\to gg$ and $H\to b\bar{b}$. Specifically, we consider the six classical event shapes thrust, heavy jet mass, $C$-parameter, total and wide jet broadening, and the three-jet resolution $y_{23}$ in the Durham algorithm. We also present results for the soft-drop variant of thrust. Decays of the Higgs boson to two gluons are treated in the heavy-top limit, whereas decays to a bottom-quark pair are mediated by a non-vanishing Yukawa coupling, despite considering kinematically massless quarks. Our results highlight the importance of NNLO QCD corrections in the calculation of event-shape observables and provide means to quantify the intrinsic difference between the two Higgs decay modes. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2508_14282 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Precise Predictions for Event Shapes in Hadronic Higgs Decays Fox, Elliot Ridder, Aude Gehrmann-De Gehrmann, Thomas Glover, Nigel Marcoli, Matteo Preuss, Christian T. High Energy Physics - Phenomenology We present NNLO QCD predictions for a wide range of event-shape observables in hadronic Higgs decays, taking into account the two dominant decay modes $H\to gg$ and $H\to b\bar{b}$. Specifically, we consider the six classical event shapes thrust, heavy jet mass, $C$-parameter, total and wide jet broadening, and the three-jet resolution $y_{23}$ in the Durham algorithm. We also present results for the soft-drop variant of thrust. Decays of the Higgs boson to two gluons are treated in the heavy-top limit, whereas decays to a bottom-quark pair are mediated by a non-vanishing Yukawa coupling, despite considering kinematically massless quarks. Our results highlight the importance of NNLO QCD corrections in the calculation of event-shape observables and provide means to quantify the intrinsic difference between the two Higgs decay modes. |
| title | Precise Predictions for Event Shapes in Hadronic Higgs Decays |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2508.14282 |